C compile time

[Jan Hubicka]

> 
> --- Diego Novillo <dnovillo@redhat.com> wrote:
> 
> > 
> > You really need to examine trends in performance and
> > do the detective
> > work.  In theory, the SPEC testers are collecting
> > everything necessary,
> > down to the daily diffs.  But the process is time
> > consuming, just the
> > same.
> 
> True. I hadn't realized that noise with SPEC runs was
> such a big deal. So speaking of examining the stats,

Actually my experience is that majority of patches has less effect than
the noise is, but overall the curves move.  It is dificult to analyze
such a data then :(

Honza
> SPEC2K 176.gcc peak compiles really took a hit between
> April 24 and April 29, and still haven't recovered
> yet. Anybody have offhand ideas what might have caused
> that, before I start digging through gcc-cvs? Thanks,
> 
> Dara
> 
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